The book is dated 1879, so it includes the history of the county and its residents from the beginning of the county up to 1879. This is a wonderful resource for a genealogist if they have family that lived in Greene County before 1879. The book has 784 pages and contains detailed information on the history of the county, including the history of the towns within Greene County. There are illustrations of farms, pioneer dwellings, companies, and Indians and their impact on the history of the county. Portraits are also included of some of the early pioneers. The book also contains maps, War Records, Directories, and an abstract of Illinois State Law.